<template>
	<div id="app">
		<el-container class="home-container">
			<!-- 头部区域 -->
			<el-header>
				<div class="logo">
					<img src="../assets/heima.png" alt="" />
					<span>电商后台管理系统</span>
				</div>
				<el-button type="info" @click="logout">退出</el-button>
			</el-header>
			<!-- 页面主体区域 -->
			<el-container>
				<!-- 侧边栏 -->
				<el-aside :width="isCollapse ? '64px':'200px'">
					<div class="toggle_btn" @click="toggleCollapse" ><span>|||</span></div>
					<el-menu background-color="#313743" text-color="#fff" active-text-color="#359BFB" :unique-opened="true" :collapse="isCollapse"
					:collapse-transition="false" :router="true" :default-active="activePath">
						<!-- 一级菜单 -->
						<el-submenu :index="item.id + ''" v-for="item in menuList" :key="item.id">
							<!-- 一级菜单的模板区域  -->
							<template #title>
								<!-- 图标 -->
								<i :class="iconsObj[item.id]"></i>
								<!-- 文本 -->
								<span>{{ item.authName }}</span>
							</template>
							<!-- 二级菜单 -->
							<el-menu-item :index="'/' + subItem.path" 
							v-for="subItem in item.children" 
							:key="subItem.id"
							@click="saveNavState('/' + subItem.path)">
								<!-- 二级菜单的模板区域  -->
								<template #title>
									<!-- 图标 -->
									<i class="el-icon-menu"></i>
									<!-- 文本 -->
									<span>{{ subItem.authName }}</span>
								</template>
							</el-menu-item>
						</el-submenu>
					</el-menu>
				</el-aside>
				<!-- 右侧内容主体 -->
				<el-main>
					<router-view></router-view>
				</el-main>
			</el-container>
		</el-container>
	</div>
</template>
<script>
export default {
	data() {
		return {
			// 菜单数组
			menuList: [],
			iconsObj: {
				'125': 'iconfont icon-users',
				'103': 'iconfont icon-tijikongjian',
				'101': 'iconfont icon-shangpin',
				'102': 'iconfont icon-danju',
				'145': 'iconfont icon-baobiao'
			},
			// 是否折叠
			isCollapse: false,
			// 被激活的链接
			activePath: ''
		};
	},
	created() {
		this.getMenuList();
		this.activePath = window.sessionStorage.getItem('activePath')
	},
	methods: {
		logout() {
			window.sessionStorage.clear();
			this.$router.push('/login');
			this.$message.success({
				showClose: true,
				message: '退出成功！',
				duration: 1000
			});
		},
		// 获取所有菜单
		async getMenuList() {
			const { data: res } = await this.$http.get('/menus');
			console.log(res);
			if (res.meta.status !== 200) {
				return this.$message.error({
					showClose: true,
					message: "获取菜单数据失败！"
				});
			}
			this.menuList = res.data;
		},
		// 菜单折叠 展开
		toggleCollapse(){
			this.isCollapse = !this.isCollapse
		},
		// 保存激活状态
		saveNavState(activePath){
			window.sessionStorage.setItem('activePath', activePath);
			this.activePath = activePath;
		}
	}
};
</script>
<style lang="less" scoped>
.home-container {
	height: 100%;
}
.el-header {
	background-color: #373d41;
	display: flex;
	align-items: center;
	justify-content: space-between;
	.logo {
		display: flex;
		align-items: center;
		span {
			color: #fff;
			font-size: 30px;
			margin-left: 15px;
		}
	}
}
.el-aside {
	background-color: #313743;
	.el-menu {
		border-right: none;
	}
}
.el-main {
	background-color: #e9edf0;
}

.iconfont {
	margin-right: 10px;
}
.toggle_btn{
	display: flex;
	align-items: center;
	justify-content: center;
	background-color: #475163;
	font-size: 10px;
	height: 30px;
	color: #fff;
	letter-spacing: 2px;
	cursor: pointer;	
}
</style>
